arch/x86/entry/Makefile

File Facts

System

Linux kernel

Corpus path

arch/x86/entry/Makefile

Extension

[no extension]

Size

693 bytes

Lines

27

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: build/configuration rule

Status

atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the x86 low level entry code
#

KASAN_SANITIZE := n
UBSAN_SANITIZE := n
KCOV_INSTRUMENT := n

CFLAGS_REMOVE_syscall_32.o	= $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_syscall_64.o	= $(CC_FLAGS_FTRACE)

CFLAGS_syscall_32.o		+= -fno-stack-protector
CFLAGS_syscall_64.o		+= -fno-stack-protector

obj-y				:= entry.o entry_$(BITS).o syscall_$(BITS).o common.o

obj-y				+= vdso/
obj-y				+= vsyscall/

obj-$(CONFIG_PREEMPTION)	+= thunk.o
CFLAGS_entry_fred.o		+= -fno-stack-protector
CFLAGS_REMOVE_entry_fred.o	+= -pg $(CC_FLAGS_FTRACE)
obj-$(CONFIG_X86_FRED)		+= entry_64_fred.o entry_fred.o

obj-$(CONFIG_IA32_EMULATION)	+= entry_64_compat.o syscall_32.o

Annotation

• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.